Topcoats versus Durability of an Intumescent Coating
| Autor: | Serge Bourbigot, Anil D. Naik, Sophie Duquesne, Séverine Bellayer, Maude Jimenez, Pierre Bachelet |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
General Chemical Engineering 020101 civil engineering 02 engineering and technology General Chemistry Epoxy engineering.material 021001 nanoscience & nanotechnology Accelerated aging Durability Silane Industrial and Manufacturing Engineering 0201 civil engineering chemistry.chemical_compound Coating chemistry visual_art visual_art.visual_art_medium engineering Fire resistance Char Composite material 0210 nano-technology Intumescent |
| Zdroj: | Industrial & Engineering Chemistry Research. 55:9625-9632 |
| ISSN: | 1520-5045 0888-5885 |
| Popis: | Epoxy-based intumescent coatings are effective solutions for protecting steel against fire. To design a successful product, it is, however, of primary importance to investigate its long-term durability. Some of these coatings do not resist accelerated aging conditions such as contact with salted water. One solution to overcome this drawback consists of applying a specific topcoat. In this work, various topcoats were applied on a model intumescent coating. Topcoats were shown to impact, under heating, the char expansion, char morphology, and char strength. The general trend is that the topcoats, before any aging exposure, improve the fire resistance behavior of the intumescent coatings. Most topcoats, however, do not limit penetration of salted water into the coating, thus affecting the intumescent properties. Only a silane-based topcoat was reported to trap or limit the diffusion of sodium and chlorine ions, thus protecting the underlying intumescent coating. |
| Databáze: | OpenAIRE |
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